Overview
The MAX147CEAP+ is a 12-bit data-acquisition system produced by Analog Devices Inc./Maxim Integrated. This device combines an 8-channel multiplexer, high-bandwidth track/hold, and a serial interface, offering high conversion speed and low power consumption. The MAX147 operates from a single +2.7V to +5.25V supply and supports software-configurable analog inputs for unipolar/bipolar and single-ended/differential operation.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage | 2.7 | - | 5.25 | V |
| Number of Channels | - | - | 8 (single-ended) / 4 (differential) | - |
| Resolution | - | - | 12 bits | - |
| Sampling Rate | - | - | 133 kS/s | - |
| Interface Type | - | - | SPI, QSPI, MICROWIRE | - |
| Conversion Time | 5.5 | - | 7.5 | µs |
| Operating Temperature Range | -40 | - | 85 | °C |
| Storage Temperature Range | -60 | - | 150 | °C |
| Power Consumption (Power-Down Mode) | - | - | 0.2 µA | - |
Key Features
- Single-supply operation from +2.7V to +5.25V.
- Software-configurable analog inputs for unipolar/bipolar and single-ended/differential operation.
- 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices.
- Internal or external serial-interface clock for successive-approximation analog-to-digital conversions.
- Internal 2.5V reference (MAX146), external reference required for MAX147.
- Low power consumption with automatic power-down and quick wake-up.
- Available in 20-pin DIP and SSOP packages.
Applications
The MAX147 is suitable for various applications requiring low power consumption and high conversion speed, such as:
- Battery-powered devices.
- Data-acquisition systems.
- Industrial control systems.
- Medical devices.
- Other circuits with demanding power-consumption and space requirements.
Q & A
- What is the supply voltage range for the MAX147?
The MAX147 operates from a single +2.7V to +5.25V supply.
- How many channels does the MAX147 support?
The MAX147 supports 8 single-ended or 4 differential channels.
- What is the resolution of the MAX147?
The MAX147 has a 12-bit resolution.
- What is the sampling rate of the MAX147?
The MAX147 has a sampling rate of up to 133 kS/s.
- What type of interface does the MAX147 use?
The MAX147 uses a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices.
- Does the MAX147 have an internal reference?
No, the MAX147 requires an external reference, while the MAX146 has an internal 2.5V reference.
- What are the operating temperature ranges for the MAX147?
The operating temperature ranges for the MAX147 are from -40°C to +85°C.
- How does the MAX147 manage power consumption?
The MAX147 has automatic power-down and quick wake-up features to manage power consumption, reducing supply current to under 60µA at reduced sampling rates.
- In what packages is the MAX147 available?
The MAX147 is available in 20-pin DIP and SSOP packages.
- What are some typical applications for the MAX147?
The MAX147 is suitable for battery-powered devices, data-acquisition systems, industrial control systems, medical devices, and other circuits with demanding power-consumption and space requirements.
